JP2015510659A - Rust-proof washer and secondary battery including the same - Google Patents
Rust-proof washer and secondary battery including the same Download PDFInfo
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- JP2015510659A JP2015510659A JP2014551216A JP2014551216A JP2015510659A JP 2015510659 A JP2015510659 A JP 2015510659A JP 2014551216 A JP2014551216 A JP 2014551216A JP 2014551216 A JP2014551216 A JP 2014551216A JP 2015510659 A JP2015510659 A JP 2015510659A
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- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 61
- 230000003449 preventive effect Effects 0.000 claims abstract description 32
- 229920005989 resin Polymers 0.000 claims abstract description 19
- 239000011347 resin Substances 0.000 claims abstract description 19
- 239000003112 inhibitor Substances 0.000 claims abstract description 11
- 238000005260 corrosion Methods 0.000 claims abstract description 10
- 230000007797 corrosion Effects 0.000 claims abstract description 10
- -1 polypropylene Polymers 0.000 claims description 26
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 18
- 229920003002 synthetic resin Polymers 0.000 claims description 15
- 239000004743 Polypropylene Substances 0.000 claims description 14
- 229920001155 polypropylene Polymers 0.000 claims description 14
- 239000002952 polymeric resin Substances 0.000 claims description 11
- 239000012528 membrane Substances 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 229920001407 Modal (textile) Polymers 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 5
- 229920000297 Rayon Polymers 0.000 claims description 5
- 229920000573 polyethylene Polymers 0.000 claims description 5
- 239000002964 rayon Substances 0.000 claims description 5
- 239000004809 Teflon Substances 0.000 claims description 4
- 229920006362 Teflon® Polymers 0.000 claims description 4
- 229920001707 polybutylene terephthalate Polymers 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 229910001566 austenite Inorganic materials 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims 1
- 238000002788 crimping Methods 0.000 abstract description 9
- 239000003795 chemical substances by application Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 5
- 239000011255 nonaqueous electrolyte Substances 0.000 description 5
- 239000011230 binding agent Substances 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
- 229910003002 lithium salt Inorganic materials 0.000 description 4
- 159000000002 lithium salts Chemical class 0.000 description 4
- 239000000057 synthetic resin Substances 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000007773 negative electrode material Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 3
- 229920002554 vinyl polymer Polymers 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000007784 solid electrolyte Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-N Nitrous acid Chemical compound ON=O IOVCWXUNBOPUCH-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002388 carbon-based active material Substances 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910003480 inorganic solid Inorganic materials 0.000 description 1
- 230000010220 ion permeability Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910021437 lithium-transition metal oxide Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/571—Methods or arrangements for affording protection against corrosion; Selection of materials therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
- H01M50/167—Lids or covers characterised by the methods of assembling casings with lids by crimping
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
- H01M50/171—Lids or covers characterised by the methods of assembling casings with lids using adhesives or sealing agents
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/184—Sealing members characterised by their shape or structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/19—Sealing members characterised by the material
- H01M50/191—Inorganic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/19—Sealing members characterised by the material
- H01M50/193—Organic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/19—Sealing members characterised by the material
- H01M50/195—Composite material consisting of a mixture of organic and inorganic materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/598—Guarantee labels
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Bolts, Nuts, And Washers (AREA)
Abstract
本発明の一実施例によれば、防錆剤(VCI; Volatile Corrosion Inhibitor)とベース樹脂を含むことを特徴とする二次電池用防錆性ワッシャー及びこれを含む二次電池を提供する。本発明の防錆性ワッシャーは、電池セルのクリンピング部の錆発生又は腐食が生じることを防止して電池の安全性を向上させることができる。【選択図】図６According to one embodiment of the present invention, a rust preventive washer for a secondary battery including a rust inhibitor (VCI) and a base resin, and a secondary battery including the same are provided. The rust preventive washer of the present invention can improve the safety of the battery by preventing the occurrence of rust or corrosion of the crimping portion of the battery cell. [Selection] Figure 6
Description
本発明は、気化性防錆剤を含む防錆性ワッシャー及びこれを含む二次電池に関する。 The present invention relates to a rust washer containing a vaporizable rust preventive and a secondary battery including the same.
モバイル機器に対する技術開発と需要が増加するに伴ってエネルギー源としての二次電池の需要が急激に増加している。また、そのような二次電池のうち、高いエネルギー密度と放電電圧のリチウム二次電池に対して多くの研究が行われており、常用化されて広く用いられている。 As technology development and demand for mobile devices increase, the demand for secondary batteries as an energy source has increased rapidly. In addition, among such secondary batteries, much research has been conducted on lithium secondary batteries with high energy density and discharge voltage, and they are commonly used and widely used.
二次電池は電池ケースの形状により、電極組立体が円筒状、又は角形の金属缶に内蔵している円筒状電池及び角形電池と、電極組立体がアルミニウムラミネートシートのパウチ型ケースに内蔵しているパウチ型電池に分類される。 Depending on the shape of the battery case, the secondary battery has a cylindrical battery or square battery in which the electrode assembly is built in a cylindrical or rectangular metal can, and the electrode assembly is built in a pouch-type case made of an aluminum laminate sheet. It is classified as a pouch-type battery.
一般的に二次電池は缶と、前記缶の内部に収容される電極組立体; 前記缶の上端開部に結合されるキャップ(cap) 組立体; 及び前記キャップアセンブリーの上端に取り付けられるワッシャーを含む。 Generally, a secondary battery includes a can and an electrode assembly housed in the can; a cap assembly coupled to an upper end opening of the can; and a washer attached to an upper end of the cap assembly including.
一般的に、キャップアセンブリーに取り付けられたワッシャーは、基本的に電気的絶縁状態を補完する役割を行い、電池セルを外部の衝撃から保護し電池セルの上端に取り付けられる部材に対する機械的強度を補完する役割も行う。また、 電池セルの腐食及び PCM(電流遮断素子) などのような電子素子の腐食により齎され得る電池の内部短絡を防止して電池セルの安全性を向上させる役割も並行する。 Generally, the washer attached to the cap assembly basically serves to supplement the electrical insulation state, protects the battery cell from external impact, and provides mechanical strength to the member attached to the upper end of the battery cell. It also plays a complementary role. It also plays a role in improving battery cell safety by preventing internal short circuit of the battery, which can be deceived by corrosion of battery cells and corrosion of electronic elements such as PCM (current blocking element).
一般的に、円筒状電池のワッシャーとしてポリプロピレン、ポリエチレン、レーヨン、 混紡糸、ポリビスコース、ポリノジック及びこれらの合成樹脂などの高分子樹脂層を用いてきた。しかし、図１のように、高温高湿雰囲気で円筒状電池のクリンピング部(crimping)に錆発生が生じる問題があり、これに対する改善が求められている。 In general, polymer resin layers such as polypropylene, polyethylene, rayon, blended yarn, polyviscose, polynosic, and synthetic resins thereof have been used as washers for cylindrical batteries. However, as shown in FIG. 1, there is a problem that rust is generated in a crimping portion of a cylindrical battery in a high temperature and high humidity atmosphere, and an improvement is demanded.
本発明の解決しようとする課題は、電池のクリンピング部の錆発生又は腐食が発生することを防止することができる防錆性ワッシャー及びこれを含む二次電池を提供することである。 The problem to be solved by the present invention is to provide a rust preventive washer capable of preventing the occurrence of rust or corrosion of the crimping portion of the battery, and a secondary battery including the same.
前記のような目的を達成するため、本発明は気化性防錆剤（VCI; Volatile Corrosion Inhibitor）とベース樹脂(base resin) を 含 む 二次電池用防錆性 ワッシャーを提供する。 In order to achieve the above object, the present invention provides a rust preventive washer for a secondary battery including a vaporizable rust inhibitor (VCI; Volatile Corrosion Inhibitor) and a base resin.
また、本発明は正極/分離膜/負極構造の電極組立体が金属缶に内蔵されている二次電池であって、電極組立体が内蔵した金属缶の開放上端に取り付けられるキャップアセンブリーの上端にワッシャー(washer)が搭載されており、前記ワッシャーはベース樹脂と気化性防錆剤を含む防錆性ワッシャーを含む二次電池を提供する。 The present invention also provides a secondary battery in which an electrode assembly having a positive electrode / separation membrane / negative electrode structure is incorporated in a metal can, and the upper end of a cap assembly attached to the open upper end of the metal can incorporated in the electrode assembly. The washer provides a secondary battery including a rust-proof washer including a base resin and a vaporizable rust-preventive agent.
本発明の防錆性ワッシャーが含まれる二次電池は、電池のクリンピング部の錆発生又は腐食が発生することを防止して電池の安全性を向上させることができる。 The secondary battery including the rust preventive washer of the present invention can improve the safety of the battery by preventing the occurrence of rust or corrosion of the crimping portion of the battery.
本明細書に添付の下記図等は、本発明の好ましい実施例を例示するものであり、前述の発明内容と共に本発明の技術思想をさらに理解させる役割を果たすものであるため、本発明はそのような図に記載された事項にのみ限定されて解釈されてはならない。 The following figures and the like attached to the present specification exemplify a preferred embodiment of the present invention, and serve to further understand the technical idea of the present invention together with the above-described invention contents. It should not be construed as being limited to the matters described in such figures.
以下、本発明に対する理解のため、本発明をさらに詳しく説明する。 Hereinafter, the present invention will be described in more detail for understanding of the present invention.
本明細書及び特許請求の範囲に用いられた用語や単語は、通常的や辞典的な意味と限定して解釈されてはならず、発明者は自分の発明を最善の方法で説明するために用語の概念を適切に定義することができるとの原則に即して本発明の技術的思想に符合する意味と概念と解釈されなければならない。 Terms and words used in this specification and claims should not be construed to be limited to ordinary or lexical meanings, and the inventor should describe his invention in the best possible manner. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention in accordance with the principle that the concept of term can be appropriately defined.
本発明の一実施例に係る二次電池用防錆性ワッシャーは、気化性防錆剤 (VCI; Volatile Corrosion Inhibitor) 及びベース樹脂(base resin)を含む。 A rust preventive washer for a secondary battery according to an embodiment of the present invention includes a vaporizable rust inhibitor (VCI) and a base resin.
本発明の一実施例によれば、前記防錆性ワッシャーは防錆性が優秀で二次電池のクリンピング部の錆発生、又は腐食が発生することを防止して電池の安全性を向上させることができる。 According to an embodiment of the present invention, the rust-proof washer is excellent in rust-proof property, and prevents the occurrence of rust or corrosion of the crimping portion of the secondary battery, thereby improving the safety of the battery. Can do.
本発明において、防錆性とは金属表面で水酸化物又は酸化物を主体とする化合物が生成されることを防止する性質であり、金属表面で腐敗生成物の発生を防止する性質を意味する。 In the present invention, the antirust property is a property for preventing the formation of a hydroxide or a compound mainly composed of an oxide on the metal surface, and means a property for preventing the occurrence of spoilage products on the metal surface. .
本発明の一実施例に係る前記気化性防錆剤は、高分子樹脂、及びNaNO２ 又は NaNO３を含むことができる。前記気化性防錆剤は常温で昇華性があり、防錆性を有する NaNO２ 、又は NaNO３ 又はその化合物を主成分とする混合物からなり得る。 The vaporizable rust preventive according to an embodiment of the present invention may include a polymer resin and NaNO 2 or NaNO 3 . The vaporizable rust preventive agent has a sublimation property at room temperature, and can be composed of NaNO 2 having a rust preventive property or a mixture containing NaNO 3 or a compound thereof as a main component.
また、 本発明で用いられる高分子樹脂は、通常用いられる高分子樹脂又は高分子合成樹脂を用いることができる。例えば、ポリプロピレン(PP)、ポリブチレンテレフタレート、ポリエチレン、ペット、テフロン（登録商標）、ポリテトラフルオロエチレン、レーヨン、混紡糸、ポリビスコース及びポリノジックからなる群から選ばれる一つ、又はこれらのうち２種以上の混合物であり得るが、これらに限られるものではない。 In addition, as the polymer resin used in the present invention, a commonly used polymer resin or polymer synthetic resin can be used. For example, one selected from the group consisting of polypropylene (PP), polybutylene terephthalate, polyethylene, pet, Teflon (registered trademark), polytetrafluoroethylene, rayon, blended yarn, polyviscose and polynosic, or two of these It can be a mixture of species or more, but is not limited thereto.
本発明の一実施例によれば、 本発明の防錆性ワッシャーは前記気化性防錆剤とベース樹脂を混合し、これを圧出機で圧出して所望のワッシャー状で打ち抜きして得ることができる。 According to one embodiment of the present invention, the rust preventive washer of the present invention is obtained by mixing the vaporizable rust preventive agent and the base resin, and extruding it with a press machine and punching it in a desired washer shape. Can do.
この時、前記ベース樹脂は通常用いられる高分子樹脂又は高分子合成樹脂を用いることができ、例えば、ポリプロピレン(PP)、ポリブチレンテレフタレート、ポリエチレン、ペット、テフロン（登録商標）、ポリテトラフルオロエチレン、レーヨン、混紡糸、ポリビスコース及びポリノジックからなる群から選ばれる一つ、又はこれらのうち２種以上の混合物であり得る。 At this time, the base resin may be a commonly used polymer resin or polymer synthetic resin, such as polypropylene (PP), polybutylene terephthalate, polyethylene, PET, Teflon (registered trademark), polytetrafluoroethylene, It may be one selected from the group consisting of rayon, blended yarn, polyviscose and polynosic, or a mixture of two or more thereof.
前記製造過程を一例として図２に示したが、これらに限られるものではない。 Although the manufacturing process is shown in FIG. 2 as an example, the manufacturing process is not limited thereto.
図２を検討してみれば、NaNO２ 又は NaNO３を均一な性状をなすまで細かく粉砕させる。粉砕された NaNO２ 又は NaNO３を高分子樹脂と混合して気化性防錆剤を得ることができる。これをベース樹脂と混合して圧出した後、ワッシャー状で打ち抜きして防錆性ワッシャーを製造することができる。 Come to consider Figure 2, it is finely ground to form a uniform nature of NaNO 2 or NaNO 3. The pulverized NaNO 2 or NaNO 3 can be mixed with a polymer resin to obtain a vaporizable rust inhibitor. After this is mixed with the base resin and extruded, it can be punched out in the form of a washer to produce a rust-proof washer.
具体的に、前記 NaNO２ 又は NaNO３の粉砕工程は、常温及び常圧でなされることができる。NaNO２又はNaNO３が均一な状態で等しく分散されてこそ、均一な気化性防錆剤を含む防錆性ワッシャーを生産することができ、電池の防錆性をさらに向上させることができる。前記 NaNO２ 又は NaNO３は、高分子樹脂 １００ 重量%に対して ３ から ３０ 重量%で用いられ得るが、これに限られるものではない。 Specifically, the NaNO 2 or NaNO 3 pulverization process may be performed at normal temperature and normal pressure. If NaNO 2 or NaNO 3 is evenly dispersed in a uniform state, a rust-proof washer containing a uniform vaporizable rust-proofing agent can be produced, and the rust-proof property of the battery can be further improved. The NaNO 2 or NaNO 3 may be used in an amount of 3 to 30% by weight with respect to 100% by weight of the polymer resin, but is not limited thereto.
前記粉砕された NaNO２ 又は NaNO３を溶融された高分子樹脂、好ましくは溶融されたポリプロピレン樹脂と混合することができる。この時、混合時の溶媒及びその他の添加剤などを用いることができ、これは当分野で公知の通常用いられるものを用いることができる。この際、気化性防錆剤は、保管及び使用が容易になるように、例えばペレットさせることができ、これは常温、常圧でなり得る。 The ground NaNO 2 or NaNO 3 can be mixed with a molten polymer resin, preferably a molten polypropylene resin. At this time, a solvent at the time of mixing, other additives, and the like can be used, and those commonly used in this field can be used. At this time, the vaporizable rust preventive agent can be pelletized, for example, so as to be easily stored and used, and can be at ordinary temperature and normal pressure.
このように生成された気化性防錆剤を、用途によってベース樹脂と一定比率で混合して用いることができ、例えば、前記気化性防錆剤をベース樹脂 １００ 重量%に対して１ から３０ 重量%で用いることができる。前記混合物を一定温度で圧出させ圧出シートを得て、この圧出シートを金型を利用して望むワッシャー状で打ち抜きして本発明の二次電池用防錆性ワッシャーを得ることができる。この時、ワッシャーは ０.１ mm から ０.８mmの厚さを有することが好ましい。 The vaporizable rust preventive agent thus produced can be mixed with a base resin at a certain ratio depending on the application. For example, the vaporizable rust preventive agent is used in an amount of 1 to 30 wt. % Can be used. The mixture is extruded at a constant temperature to obtain an extruded sheet, and the extruded sheet is punched in a desired washer shape using a mold to obtain a rust preventive washer for a secondary battery of the present invention. . At this time, the washer preferably has a thickness of 0.1 mm to 0.8 mm.
前記防錆性ワッシャーの製造工程において、当分野で用いられる溶媒及びその他の添加剤を追加で添加して用いることができ、前記方法は一例に過ぎないだけで、これらに本発明を限るものではない。 In the manufacturing process of the rust-proof washer, a solvent and other additives used in the art can be additionally added, and the method is only an example, and the present invention is not limited thereto. Absent.
また、本発明は、前記防錆性ワッシャーを含む二次電池を含む。 Moreover, this invention contains the secondary battery containing the said rust preventive washer.
本発明の一実施例に係る二次電池は、正極/分離膜/負極構造の電極組立体が金属缶に内蔵している二次電池であり、電極組立体が内蔵された金属缶の開放上端に取り付けられるキャップアセンブリーの上端にワッシャー(washer)が搭載され得て、前記ワッシャーは上述したところのようにベース樹脂と気化性防錆剤を含む防錆性ワッシャーであり得る。 A secondary battery according to an embodiment of the present invention is a secondary battery in which a positive electrode / separation membrane / negative electrode structure electrode assembly is incorporated in a metal can, and an open upper end of the metal can in which the electrode assembly is incorporated. A washer may be mounted on the upper end of the cap assembly attached to the cap assembly, and the washer may be a rust preventive washer including a base resin and a vaporizable rust preventive agent as described above.
本発明の一実施例において、前記防錆性ワッシャーは以下のような原理により防錆機能を行うことができる。 In one embodiment of the present invention, the rust-proof washer can perform a rust-proof function according to the following principle.
具体的にみれば、NaNO２ 又は NaNO３は防錆性ワッシャー内部にクリスタル(crystals) 状態で分散することができ、空気中でゆっくり酸化されて一部は NaNO３を形成することにより、防錆性ワッシャー内部に NaNO２と NaNO３が共存することができる。前記 NaNO２と NaNO３は、空気中の水気に触れてHNO２(nitrous acid; 亜窒酸)と HNO３(nitric acid; 窒酸)を形成することになるが、この時、HNO３は二次電池の金属缶の金属表面を微細に酸化させることにより、腐食を防止することができる。 Specifically, NaNO 2 or NaNO 3 can be dispersed in crystals in a rust-proof washer and is slowly oxidized in air to form NaNO 3 in part, thereby preventing rust. NaNO 2 and NaNO 3 can coexist in the internal washer. NaNO 2 and NaNO 3 come into contact with moisture in the air to form HNO 2 (nitrous acid) and HNO 3 (nitric acid). At this time, HNO 3 Corrosion can be prevented by finely oxidizing the metal surface of the metal can of the secondary battery.
一方、本発明の一実施例によれば、これら HNO２と HNO３は、例えば、金属缶の鉄表面と反応する場合、VCI ガス(gas) 作用で金属缶の終端に１０ Å から １０００ Å 厚さでガンマ三酸化鉄 (γ-Fe２O３)が形成され得る。 On the other hand, according to one embodiment of the present invention, when these HNO 2 and HNO 3 react with the iron surface of a metal can, for example, the VCI gas (gas) action causes the end of the metal can to have a thickness of 10 か ら to 1000 Å. Now gamma iron trioxide (γ-Fe 2 O 3 ) can be formed.
このように、金属缶の終端に形成されたガンマ三酸化鉄(γ-Fe２O３)は追加的に電池セルの錆発生を防止することができる。 Thus, the gamma iron trioxide (γ-Fe 2 O 3 ) formed at the end of the metal can can additionally prevent the battery cell from generating rust.
本発明において、前記金属缶は円筒状の缶であり得、角形の缶でもあり得る。本発明の一つの実施例に係る二次電池は、円筒状の缶の場合、前記キャップアセンブリーには電極組立体に連結された正極突出端子が中央に形成されており、 キャッププレートは正極端子と連結され、缶は負極端子を形成する構造であり得る。 In the present invention, the metal can may be a cylindrical can or a square can. In the secondary battery according to one embodiment of the present invention, in the case of a cylindrical can, the cap assembly has a positive electrode protruding terminal connected to the electrode assembly at the center, and the cap plate is a positive electrode terminal. The can can be structured to form a negative electrode terminal.
また他の例として角形の缶の場合、前記キャップアセンブリーには電極端子に連結された負極突出端子が中央に形成されており、角形の缶とキャッププレートは、前記負極端子と絶縁された状態で正極端子を形成する構造であり得る。 As another example, in the case of a rectangular can, the cap assembly has a negative electrode protruding terminal connected to the electrode terminal at the center, and the rectangular can and the cap plate are insulated from the negative electrode terminal. In this case, the positive electrode terminal may be formed.
本発明に係る前記二次電池は、好ましくは高いエネルギー密度、 放電電圧、 及び出力安定性のリチウム二次電池であり得る。そのようなリチウム二次電池は、正極、負極、分離膜、リチウム塩含有非水電解液などで構成されている。 The secondary battery according to the present invention may be a lithium secondary battery preferably having high energy density, discharge voltage, and output stability. Such a lithium secondary battery is composed of a positive electrode, a negative electrode, a separation membrane, a lithium salt-containing non-aqueous electrolyte, and the like.
前記正極は、例えば、正極集電体上に正極活物質、導電材及びバインダーの混合物を塗布した後、乾燥して製造され、必要に応じては充填剤をさらに添加することもある。前記負極は、また負極集電体上に負極材料を塗布、乾燥して製作され、必要によって、先に説明したことのような成分などがさらに含まれることもある。 The positive electrode is produced, for example, by applying a mixture of a positive electrode active material, a conductive material and a binder on a positive electrode current collector and then drying, and a filler may be further added as necessary. The negative electrode is manufactured by applying and drying a negative electrode material on a negative electrode current collector, and may further include components as described above, if necessary.
前記分離膜は、負極と正極との間に介在され、このような分離膜としては高いイオン透過度と機械的強度を有する絶縁性の薄い薄膜が用いられる。 The separation membrane is interposed between a negative electrode and a positive electrode. As such a separation membrane, a thin insulating thin film having high ion permeability and mechanical strength is used.
リチウム塩含有非水系電解液は、非水電解液とリチウム塩からなり、非水電解液では液状非水電解液、 固体電解質、無機固体電解質などが用いられる。 The lithium salt-containing non-aqueous electrolyte comprises a non-aqueous electrolyte and a lithium salt, and liquid non-aqueous electrolytes, solid electrolytes, inorganic solid electrolytes, etc. are used as non-aqueous electrolytes.
前記集電体、電極活物質、導電材、バインダー、充填剤、分離膜、電解液、リチウム塩などは、当業界に公知の通常的なものを用いることができる。 As the current collector, electrode active material, conductive material, binder, filler, separation membrane, electrolytic solution, lithium salt and the like, ordinary materials known in the art can be used.
本発明に係る二次電池は、当業界に公知の通常的な方法により製造されることができる。すなわち、正極と負極との間に多孔性分離膜を挿入し、それに電解液を注入して製造することができる。 The secondary battery according to the present invention can be manufactured by a conventional method known in the art. That is, it can be manufactured by inserting a porous separation membrane between the positive electrode and the negative electrode and injecting an electrolyte into it.
正極は、 例えば、先に説明したところのように、正極活物質としてのリチウム遷移金属酸化物活物質と導電材及びバインダーを含んだスラリーを集電体上に塗布した後、乾燥及び圧延して製造することができる。同様に負極は、例えば、前に説明したところのように、負極活物質として炭素活物質と導電材及びバインダーを含んだスラリーを薄い集電体上に塗布した後、乾燥して製造することができる。 For example, as described above, the positive electrode is coated with a slurry containing a lithium transition metal oxide active material as a positive electrode active material, a conductive material, and a binder on a current collector, and then dried and rolled. Can be manufactured. Similarly, the negative electrode can be manufactured by applying a slurry containing a carbon active material, a conductive material, and a binder as a negative electrode active material onto a thin current collector, as described above, and then drying the negative electrode active material. it can.
以下、 本発明の一つの実施例に係る図を参照して本発明の内容をさらに詳しく説明するが、本発明の範疇がそれにより限られるものではない。 Hereinafter, the content of the present invention will be described in more detail with reference to the drawings according to one embodiment of the present invention, but the scope of the present invention is not limited thereto.
図３は、本発明の一つの実施例に係る円筒状の二次電池の上部構造を見せる部分断面図が模式的に示されている図である。 FIG. 3 is a view schematically showing a partial cross-sectional view showing an upper structure of a cylindrical secondary battery according to one embodiment of the present invention.
具体的に、図３を参照すれば、本発明の一実施例に係る電池１００は、缶２００の内部に発電素子としての電極組立体３００を挿入し、ここに電解液を注入し、 缶２００の上端開口部にキャップアセンブリー４００を取り付け、このようにキャップアセンブリー４００が取り付けられた状態で缶２００を熱収縮性チュービング２２０に挿入して所定の熱を加えることにより製造される。 Specifically, referring to FIG. 3, in the battery 100 according to an embodiment of the present invention, an electrode assembly 300 as a power generation element is inserted into a can 200, and an electrolyte is injected therein. The cap assembly 400 is attached to the upper end opening of the tube, and the can 200 is inserted into the heat-shrinkable tubing 220 with the cap assembly 400 attached in this manner, and predetermined heat is applied.
前記キャップアセンブリー４００は、過電流防止用ＰＣＴ(Positive Temperature Coefficient) 素子４２０ 及び電池内部圧力を正常的な状態で維持するための安全ベント４３０を含むことができる。具体的に、缶２００の上部ビーディング部２１０に実装される機密維持用ガスキット内部に、上端キャップ４１０への過電流を遮断するための ＰＣＴ素子４２０と安全ベント４３０が密着されて設けられる。上端キャップ４１０は、中央が上向突出されていて外部回路との接続による正極端子としての役割を行う。安全ベント４３０は、それの下端が電流遮断部材４４０及び正極リード３１０を介して発電素子３００の正極に連結されている。 The cap assembly 400 may include an overcurrent prevention PCT (Positive Temperature Coefficient) element 420 and a safety vent 430 for maintaining the battery internal pressure in a normal state. Specifically, a PCT element 420 and a safety vent 430 for blocking an overcurrent to the upper end cap 410 are provided in close contact with each other in the confidentiality gas kit mounted on the upper beading part 210 of the can 200. The upper end cap 410 protrudes upward at the center and serves as a positive electrode terminal by connection with an external circuit. The lower end of the safety vent 430 is connected to the positive electrode of the power generating element 300 via the current interrupting member 440 and the positive electrode lead 310.
安全ベント４３０は、導電性の薄い板材であって、その中央部は下向湾入部４３２を形成しており、湾入部４３２の上折曲及び下折曲部位にはそれぞれ深さを異にする ２ 個のノッチが形成されている。 The safety vent 430 is a thin conductive plate material, and a central portion thereof forms a downward bay entrance 432, and the upper bent portion and the lower bent portion of the bay entrance 432 have different depths. Two notches are formed.
ワッシャー５００は、キャップアセンブリー４００の上端キャップ４１０を包みながらビーディング部２１０の上部に搭載されることができるように全体的に原板構造からなされる。一方、 熱収縮性チュービング２２０が収縮される時、前記熱収縮性チュービング２２０がワッシャー５００の外周面を包みながら、キャップアセンブリー４００に対するワッシャー５００の装着がなされる。 The washer 500 is entirely made of an original plate structure so that the washer 500 can be mounted on the upper part of the beading part 210 while wrapping the upper end cap 410 of the cap assembly 400. Meanwhile, when the heat-shrinkable tubing 220 is shrunk, the washer 500 is attached to the cap assembly 400 while the heat-shrinkable tubing 220 wraps the outer peripheral surface of the washer 500.
前記ワッシャー５００の厚さは、その素材により異なり得るので、特別に限られてはいないが、好ましくは０.１ mm から０.８ mmであり得る。ワッシャーの厚さは、その機械的剛性、弾性力などに影響を及ぼすので、ワッシャーの厚さが非常に薄い場合、所望の機械的剛性などを現わすことができず、弱い外部衝撃によっても破壊されることがあるが、反対に、ワッシャーの厚さが非常に厚ければ、 電池の大きさの増加が著しくて好ましくない。したがって、このような点を複合的に考慮して前記範囲内で適切に決定することができる。 Although the thickness of the washer 500 may vary depending on the material, it is not particularly limited, but may preferably be 0.1 mm to 0.8 mm. The thickness of the washer affects its mechanical rigidity, elastic force, etc. If the washer is very thin, the desired mechanical rigidity cannot be achieved, and it can be destroyed by weak external impact. On the other hand, if the washer is very thick, the increase in battery size is not preferable. Therefore, such a point can be appropriately determined within the above range in consideration of a combination.
キャップアセンブリーに搭載されるワッシャー５００は、多様な方式で当該部位に固定されることができるところ、例えば、キャップアセンブリーのクリンピング過程でワッシャーの外周面を共に固定するか、缶の外面に取り付けられる熱収縮性チュービングが収縮されながらワッシャーの外周面を共に固定する機械的結合方式、ワッシャーの下面、又はキャップアセンブリーの上面に接着剤を付加して相互結合させる接着方式などが用いられ得る。 The washer 500 mounted on the cap assembly can be fixed to the portion in various ways. For example, the outer surface of the washer is fixed together in the crimping process of the cap assembly or attached to the outer surface of the can. A mechanical bonding method in which the outer peripheral surfaces of the washer are fixed together while the heat-shrinkable tubing is contracted, an adhesive method in which an adhesive is added to the lower surface of the washer, or the upper surface of the cap assembly may be used.
前記ワッシャー５００は、正極端子としての上端キャップ４１０が負極端子としての缶２００と接触されながら、内部短絡(short)が誘発されることを防止することができる。 The washer 500 can prevent an internal short circuit from being induced while the upper end cap 410 serving as a positive terminal is in contact with the can 200 serving as a negative terminal.
一方、図４は、前記ワッシャーが取り付けられた円筒状電池の実際写真を示した図である。 On the other hand, FIG. 4 is a view showing an actual photograph of the cylindrical battery to which the washer is attached.
図４を検討してみれば、本発明の一実施例に係る円筒状電池は防錆性ワッシャーの外部にチュービング(tubing)が備えられてワッシャーの外周面を包むことができる。 Considering FIG. 4, the cylindrical battery according to an embodiment of the present invention may be provided with tubing outside the rust preventive washer so as to wrap the outer peripheral surface of the washer.
以下、本発明を具体的に説明するために実施例を挙げて詳しく説明する。しかし、本発明に係る実施例は多様な他の形態で変形されることができ、 本発明の範囲が下記で詳しく説明する実施例に限られるものと解釈されてはいけない。本発明の実施例は、当業界で平均的な知識を有した者に本発明をより完全に説明するために提供されるものである。
［発明の実施のための形態］
Hereinafter, the present invention will be described in detail with reference to examples. However, the embodiments of the present invention can be modified in various other forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art.
[Mode for Carrying Out the Invention]
実施例
以下、実施例及び実験例を挙げてさらに説明するが、本発明がこれらの実施例及び実験例により制限されるものではない。
Examples Hereinafter, the present invention will be further described with reference to Examples and Experimental Examples, but the present invention is not limited to these Examples and Experimental Examples.
実施例 １
<防錆性ワッシャーの製造>
NaNO２を常温、常圧で均一な性状をなすまでよく交ぜた後、細かく粉砕させた。前記粉砕されたNaNO２を溶融されたポリプロピレン樹脂と混合させて気化性防錆剤(VCI)を得た。
Example 1
<Manufacture of rust-proof washers>
NaNO 2 was mixed well until normal properties were obtained at normal temperature and normal pressure, and then finely pulverized. The pulverized NaNO 2 was mixed with molten polypropylene resin to obtain a vaporizable rust inhibitor (VCI).
その次に、前記気化性防錆剤をペレット化させた後、常温で冷凍させてペレット型気化性防錆剤を得た。このように得たペレット型気化性防錆剤をベース樹脂としてポリプロピレン樹脂と約 ０.５:１０の割合で交ぜ、一定温度で圧出させて圧出シートを得、これを金型を利用してワッシャー状で打ち抜きして防錆性ワッシャーを製造した。 Next, the vaporizable rust inhibitor was pelletized and then frozen at room temperature to obtain a pellet type vaporizable rust inhibitor. The pellet type vaporizable rust preventive agent thus obtained is mixed with polypropylene resin at a ratio of about 0.5: 10 as a base resin, and is extruded at a constant temperature to obtain an extruded sheet, which is used using a mold. A rust-proof washer was manufactured by punching in the form of a washer.
<円筒状二次電池製造>
Niをメッキした SPCE(冷間圧延鋼板)を用いて上端キャップ及び円筒状缶を製作し、円筒状缶に電極組立体を取り付けた後、図３のように防錆性ワッシャーをキャップアセンブリーの上端キャップを包みながらビーディング部上端に搭載し、 熱収縮性チュービングで缶の外面を包みながらキャップアセンブリーの上端部を密封して円筒状二次電池を製作した。
<Manufacture of cylindrical secondary battery>
The top cap and cylindrical can are manufactured using SPCE (cold rolled steel plate) plated with Ni, and after the electrode assembly is attached to the cylindrical can, a rust-proof washer is attached to the cap assembly as shown in FIG. A cylindrical secondary battery was manufactured by mounting the top cap on the top of the beading portion while wrapping the top cap and sealing the top end of the cap assembly while wrapping the outer surface of the can with heat shrinkable tubing.
比較例 １
気化性防錆剤を用いず、ベース樹脂としてYUPO合成樹脂素材のワッシャーを用いたとの点を除いては、実施例 １と同一の方法で円筒状二次電池を製作した。
Comparative Example 1
A cylindrical secondary battery was manufactured in the same manner as in Example 1 except that a vaporizable rust inhibitor was not used and a washer made of YUPO synthetic resin was used as the base resin.
比較例 ２
気化性防錆剤を用いず、ベース樹脂としてポリプロピレン素材のワッシャーを用いたとの点を除いては、実施例 １と同一の方法で円筒状二次電池を製作した。
Comparative Example 2
A cylindrical secondary battery was manufactured in the same manner as in Example 1 except that the vaporizable rust preventive was not used and a polypropylene washer was used as the base resin.
実験例 １
比較例 １と ２ 及び実施例 １で製造されたワッシャーをそれぞれ ５０個ずつ円筒状電池に組み立てて図５のようにビニールに密封した状態で恒温恒湿チャンバで約 ６５℃、 ９０% R.H 条件で ７日間保管した後、電池のクリンピング部の錆発生個数をよく見て比較した。
Experimental example 1
50 of the washer manufactured in Comparative Examples 1 and 2 and Example 1 were assembled into a cylindrical battery and sealed in vinyl as shown in FIG. 5 in a constant temperature and humidity chamber at about 65 ° C. and 90% RH. After storing for 7 days, the number of rust occurrences in the crimping part of the battery was carefully compared.
その結果、図６で分かるところのように、７日保管後に肉眼で確認した結果、 比較例 １の YUPO 合成紙で製造されたワッシャーを含む電池は、 ５０個のうち４６個程度の錆発生現象が生じ、比較例 ２のポリプロピレン樹脂で製造されたワッシャーを含む電池は、４４個程度錆発生現象が生じた。一方、本発明の防錆性ワッシャーを用いた電池の場合、１４個程度しか錆発生現象が生じなかったことを確認することができた。これから、本発明の実施例 １で製造された防錆性ワッシャーは、優秀な防錆機能を有していることが分かる。 As a result, as can be seen in FIG. 6, as a result of checking with the naked eye after 7 days of storage, about 46 batteries out of 50 were found to contain rust, which was manufactured with the YUPO synthetic paper of Comparative Example 1. As a result, about 44 batteries including a washer made of the polypropylene resin of Comparative Example 2 were rusted. On the other hand, in the case of the battery using the rust preventive washer of the present invention, it was confirmed that only about 14 rust generation phenomenon occurred. From this, it can be seen that the rust-proof washer produced in Example 1 of the present invention has an excellent rust-proof function.
本発明の属した分野で通常の知識を有する者であれば、前記内容に基づいて本発明の範疇内で様々な応用及び変形を行うことが可能なはずである。 Those who have ordinary knowledge in the field to which the present invention belongs should be able to make various applications and modifications within the scope of the present invention based on the above contents.
本発明の一実施例に係る防錆性ワッシャーが含まれる二次電池は、電池のクリンピング部の錆発生又は腐食が生じることを防止して二次電池の安全性を向上させることができるので、二次電池分野に有用に適用され得る。 A secondary battery including a rust preventive washer according to an embodiment of the present invention can improve the safety of the secondary battery by preventing the occurrence of rusting or corrosion of the crimping portion of the battery. It can be usefully applied to the field of secondary batteries.
１００:電池
２００:缶
２１０:ビーディング部
２２０:チュービング
３００:電極組立体
３１０:正極リード
４００:キャップアセンブリー
４１０:キャップ
４２０:ＰＣＴ素子
４３０:安全ベント
４３２:湾入部
４４０:電流遮断部材
５００:ワッシャー
100: Battery 200: Can
210: Beading part
220: Tubing 300: Electrode assembly
310: Positive electrode lead 400: Cap assembly
410: Cap
420: PCT element 430: Safety vent
432: Bay Entrance
440: Current interrupting member 500: Washer
Claims (13)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20120133430A KR20140066336A (en) | 2012-11-23 | 2012-11-23 | Washer with corrosion resistance and secondary battery comprising the same |
| KR10-2012-0133430 | 2012-11-23 | ||
| PCT/KR2013/010635 WO2014081227A1 (en) | 2012-11-23 | 2013-11-21 | Corrosion-resistant washer, and secondary battery comprising same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2015510659A true JP2015510659A (en) | 2015-04-09 |
| JP6007447B2 JP6007447B2 (en) | 2016-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2014551216A Active JP6007447B2 (en) | 2012-11-23 | 2013-11-21 | Secondary battery |
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| Country | Link |
|---|---|
| JP (1) | JP6007447B2 (en) |
| KR (1) | KR20140066336A (en) |
| CN (1) | CN103959514B (en) |
| WO (1) | WO2014081227A1 (en) |
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| WO2019017382A1 (en) * | 2017-07-20 | 2019-01-24 | 三洋電機株式会社 | Cylindrical battery |
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| KR20160040018A (en) | 2014-10-02 | 2016-04-12 | 주식회사 엘지화학 | Corrosion resistance tube for secondary battery and secondary battery comprising the same |
| CN104332584B (en) * | 2014-11-07 | 2016-08-24 | 宁波超霸能源有限公司 | A kind of insulation system of 3V lithium battery |
| KR101936501B1 (en) * | 2016-04-12 | 2019-01-08 | 세종대학교산학협력단 | Secondary battery having positive electrode including sodium-based electrode active material and sodium salt |
| CN109075285B (en) * | 2017-01-13 | 2023-04-04 | 株式会社Lg新能源 | Battery cell tray including volatile rust inhibitor |
| HUE065135T2 (en) * | 2017-05-22 | 2024-05-28 | Lg Energy Solution Ltd | Cylindrical battery comprising anti-corrosive gasket |
| CN107528012A (en) * | 2017-07-27 | 2017-12-29 | 力神电池（苏州）有限公司 | A kind of circular lithium ion battery with antirust function |
| KR102270122B1 (en) * | 2018-02-23 | 2021-06-28 | 주식회사 엘지에너지솔루션 | Gasket for secondary battery, and secondary battery comprising the gasket |
| KR102335697B1 (en) | 2018-02-23 | 2021-12-07 | 주식회사 엘지에너지솔루션 | Corrosion inhibitor for gasket, gasket for secondary battery comprising the corrosion inhibitor, and secondary battery comprising the gasket |
| WO2019164369A1 (en) * | 2018-02-23 | 2019-08-29 | 주식회사 엘지화학 | Gasket anticorrosive, secondary battery gasket comprising same, and secondary battery comprising secondary battery gasket |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN103959514A (en) | 2014-07-30 |
| KR20140066336A (en) | 2014-06-02 |
| CN103959514B (en) | 2017-06-23 |
| JP6007447B2 (en) | 2016-10-12 |
| WO2014081227A1 (en) | 2014-05-30 |
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